Difference between revisions of "Anycubic i3 Mega"

From Blue-IT.org Wiki

(Start GCODE)
(Calibrating extruder)
 
(2 intermediate revisions by the same user not shown)
Line 10: Line 10:
  
 
== Start GCODE ==
 
== Start GCODE ==
 +
=== With Nossle Clean (Cura 2.6.) and Octoprint 1.3.11 ===
 +
 
[UPDATE 06/2019 - only works with Cura 3.2]
 
[UPDATE 06/2019 - only works with Cura 3.2]
=== With Nossle Clean (Cura 2.6.) and Octoprint 1.3.11 ===
+
* See bug: https://github.com/Ultimaker/Cura/issues/1036
 +
* This does NOT work (comment out M190/M109) http://blog.mike-greene.com/fixing-cura-temperature-resets/
 +
 
 
First of all: ONLY put the code into Cura!  
 
First of all: ONLY put the code into Cura!  
 
DO NOT PUT it into Octoprint or both. This would mess things up.
 
DO NOT PUT it into Octoprint or both. This would mess things up.
Line 116: Line 120:
 
  G90
 
  G90
 
  M300 P300 S4000
 
  M300 P300 S4000
 +
 +
 +
== Calibrating extruder ==
 +
* http://sturm.selfhost.eu/wordpress/tronxy-x5sa-24v-extruder-kalibrieren-unter-nutzung-der-erweiterten-gcodes/
 +
* https://www.thingiverse.com/groups/anycubic-i3-mega/forums/general/topic:31353
 +
 +
I got an updated extruder for my i3 mega - the one of the i3Mega S. I did not want to flash my firmware, so I had to to calibrate the extruder.
 +
 +
It took me a while, until I recognized, the sending M92 Exxx codes to the printer had no effect. I googled a lot and found out, that the printer works with another subset of gcodes:
 +
 +
The whole idea is to set a "multiplicator" value instead of a fixed one. The command is
 +
 +
M8011 S0.002 ; set multiplicator to 0.002
 +
M8500        ; save to EEPROM
 +
 +
That was my starting point get exact 100mm of filament out of the extruder. The formula to precice the solution is:
 +
 +
new multiplicator = ( messured value (mm) /  [1] ) * [2]
 +
 +
[1] filament length reference value in mm - here 100mm
 +
[2] the acual messured value, that went through the extruder -  here 0.002 (our starting point)
 +
 +
Do this until [2] = [1] :-) Voilà.
  
  
  
 
[[Category:3D Printing]]
 
[[Category:3D Printing]]

Latest revision as of 01:04, 27 March 2020

Support

Cura Plugins

Electric Print Cost Calculator

Octoprint Plugin

Start GCODE

With Nossle Clean (Cura 2.6.) and Octoprint 1.3.11

[UPDATE 06/2019 - only works with Cura 3.2]

First of all: ONLY put the code into Cura! DO NOT PUT it into Octoprint or both. This would mess things up.

End Codes will remain the same.

; CUSTOM START GCODE WITH NOSSLE CLEAN
; Anycubic i3 Mega Scnd. Gen.
; Put ONLY in Cura 3.6+ and NOT in Octoprint
G21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
G28 X0 Y0 ;move X/Y to min endstops
G28 Z0 ;move Z to min endstops
G1 Z15.0 ;move the platform down 15mm
G28                          ; Home X/Y/Z axis
M190 S{material_bed_temperature_layer_0}
M109 S{material_print_temperature_layer_0}
G0 X1 Y0 Z0.15 F9000         ; Move in 1mm from edge and up [z] 0.15mm
G92 E0                       ; Set extruder to [0] zero
G1 X100 E50 F500             ; Extrude 100mm filament along Y axis 190mm long to prime and clean the nozzle
G92 E0                       ; Reset extruder to [0] zero end of cleaning run
G1 E-3 F500                  ; Retract filiment by 3 mm to reduce string effect
G1 X3 X100 Z15 F9000         ; Move over and rise to safe Z height
G1 X3 Y0 Z15 F9000	      ; Move back to front of bed at safe Z height to shear strings
M117 Printing...
G5

With Nossle Clean

[UPDATE 06/2019 - only works with Cura 3.2]

; CUSTOM START GCODE WITH NOSSLE CLEAN
; ORIGINAL ANYCUBIC i3 MEGA STARTCODE (some disabled)
G21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
G28 X0 Y0 ;move X/Y to min endstops
G28 Z0 ;move Z to min endstops
G1 Z15.0 F{speed_travel} ;move the platform down 15mm
;G92 E0 ;zero the extruded length
;G1 F200 E3 ;extrude 3mm of feed stock
;G92 E0 ;zero the extruded length again
;G1 F{speed_travel}
;M117 Printing...
;G5

; http://diy3dtech.com/nozzle-cleaning-g-code/
; Place as start G-Code in Slicer
; Use of this code is at your own risk (no warranties made or implied)
;
M117 Clean			; Indicate nozzle clean in progress on LCD
;M109 S<your temp>   		; Uncomment to set your own temp [run warmer to clean out nozzle]
; M107				; Turn layer fan off
; G21				; Set to metric [change to G20 if you want Imperial]
; G90                          ; Force coordinates to be absolute relative to the origin
G28                          ; Home X/Y/Z axis
G0 X1 Y0 Z0.15 F9000         ; Move in 1mm from edge and up [z] 0.15mm
G92 E0                       ; Set extruder to [0] zero
G1 X100 E50 F500             ; Extrude 100mm filament along Y axis 190mm long to prime and clean the nozzle
G92 E0                       ; Reset extruder to [0] zero end of cleaning run
G1 E-3 F500                  ; Retract filiment by 3 mm to reduce string effect
G1 X3 X100 Z15 F9000         ; Move over and rise to safe Z height
G1 X3 Y0 Z15 F9000	      ; Move back to front of bed at safe Z height to shear strings
;
; Ensure extruder is not reset by other code or it will be 3mm short [see next line also]
;G1 E3 F500					; Uncomment if you believe exruder will be reset
; Recommend turning off SKIRT in the slicer to avoid strings pulled into first layer
; Begin printing with sliced GCode after here
G1 F{speed_travel}
M117 Printing...
G5

Original

; ORIGINAL ANYCUBIC i3 MEGA STARTCODE
G21 ;metric values
G90 ;absolute positioning
M82 ;set extruder to absolute mode
M107 ;start with the fan off
G28 X0 Y0 ;move X/Y to min endstops
G28 Z0 ;move Z to min endstops
G1 Z15.0 F{speed_travel} ;move the platform down 15mm
G92 E0 ;zero the extruded length
G1 F200 E3 ;extrude 3mm of feed stock
G92 E0 ;zero the extruded length again
G1 F{speed_travel}
M117 Printing...
G5

End Code

Original

; ANYCUBIC i3 MEGA END GCODE
M104 S0 ; turn off extruder
M140 S0 ; turn off bed
M84 ; disable motors
M107
G91 ;relative positioning
G1 E-1 F300 ;retract the filament a bit before lifting the nozzle to release some of the pressure
G1 Z+0.5 E-5 ;X-20 Y-20 F{speed_travel} ;move Z up a bit and retract filament even more
G28 X0 ;Y0 ;move X/Y to min endstops so the head is out of the way
G1 Y180 F2000
M84 ;steppers off
G90
M300 P300 S4000


Calibrating extruder

I got an updated extruder for my i3 mega - the one of the i3Mega S. I did not want to flash my firmware, so I had to to calibrate the extruder.

It took me a while, until I recognized, the sending M92 Exxx codes to the printer had no effect. I googled a lot and found out, that the printer works with another subset of gcodes:

The whole idea is to set a "multiplicator" value instead of a fixed one. The command is

M8011 S0.002 ; set multiplicator to 0.002
M8500        ; save to EEPROM

That was my starting point get exact 100mm of filament out of the extruder. The formula to precice the solution is:

new multiplicator = ( messured value (mm) /  [1] ) * [2]
[1] filament length reference value in mm - here 100mm
[2] the acual messured value, that went through the extruder -  here 0.002 (our starting point)

Do this until [2] = [1] :-) Voilà.